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I need help with understanding Tire options for F STOCK class

To: <ba-autox@autox.team.net>
Subject: I need help with understanding Tire options for F STOCK class
From: "Stacey" <swilbur@sprynet.com>
Date: Sat, 3 Aug 2002 16:04:14 -0700
I need help with understanding Tire options for F STOCK class.
In particular for a 97 Z28 Camaro as Next season I want to run
FS and not FS-N which requires a street tire.

I looked in section 13.3 Tires but it is a bit confusing.
It states "No tire models are currently listed." for being disqualified in 
section A
But it also says in "E. No racing tire or recap (on any casing) may be used. "

But I know that most everyone uses Kumho or Hoosier tires.
Are they not considered a racing tire?

Its description says:

"Kumho V700 Victoracer

The V700 is today's competition member of the Kumho ECSTA high performance tire 
family. It is a DOT legal race winning tire which,
by capturing national championships at the Sports Car Club of America (SCCA) 
Tire Rack Solo II Nationals and the Valvoline Road
Racing Runoffs in 1998, has again proven its capabilities in both autocross and 
road racing competition."

Sounds like a race tire...

I wanted to get the Kumho V700 Victoracer but my current tire size as optioned
by the factory was a 245/50ZR16  and they do not make that size tire in Kumho
or Hoosier.

They show:
    Size                 Rim      Rim    Sect      Tread   Overall
                          width    width   width    width     Diam.
                          range
    225/50ZR16 - 6-7.5"     7"     9.2"      8.6"      24.6"      Kumho 
VictoRacer V700
    245/45ZR16 - 7.5-9"     8"     9.7"      9.1"      24.3"      Kumho 
VictoRacer V700
    265/45ZR16 - 8-10"      9"    10.4"     9.9"      25.3"      Kumho 
VictoRacer V700

    245/50ZR16 - 6.5-9.5  7.5"   10"        9"        25.7"      My Stock 
GoodYear GSC
    My Wheels are   16' X 8"

So my question is what tire can I use and be OK for Solo II  FS class?
I was thinking about the 265/45ZR16  as it is closest to my diameter at just
.4" smaller than stock where the others are 1.1 and 1.4 inches smaller diameter
and would set me lower and make the engine RPM a bit higher (marginal).

However the 265/45ZR16 has a .4 inch wider section width and .9" wider tread.
I think it should clear OK but is it SCCA Solo II legal for FS class as it is a
different tire size than stock?

What are the rulings on this or is it just the wheel size that matters and not 
the tire?


-Stacey

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